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Function for Factorial in Python
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Easiest way is to use math.factorial (available in Python 2.6 and above):
import math
math.factorial(1000)
If you want/have to write it yourself, you can use an iterative approach:
def factorial(n):
fact = 1
for num in range(2, n + 1):
fact *= num
return fact
o...
What is the easiest way to push an element to the beginning of the array?
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Prepends objects to the front of self, moving other elements upwards.
And in use:
irb>> a = [ 0, 1, 2]
=> [0, 1, 2]
irb>> a.unshift('x')
=> ["x", 0, 1, 2]
irb>> a.inspect
=> "["x", 0, 1, 2]"
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How do I reword the very first git commit message?
...ointing to a specific commit)
This way, the first commit is also included and you can just reword it like any other commit.
The --root option was introduced in Git v1.7.12 (2012). Before then the only option was to use filter-branch or --amend, which is typically harder to do.
Note: see also this...
Creating the Singleton design pattern in PHP5
.../en/language.variables.scope.php#language.variables.scope.static to understand static variable scopes and why setting static $inst = null; works.
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List all svn:externals recursively?
...here is an option in the TortoiseSVN installer to also install the SVN command line client. This option is not enabled by default.
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How to programmatically set style attribute in a view
...te the your Button can be in, whether focused, selected, pressed, disabled and so on.
For example, to get your button to change colour when it's pressed, you could define an XML file called res/drawable/my_button.xml directory like this:
<?xml version="1.0" encoding="utf-8"?>
<selector xm...
How can I check file size in Python?
... by the block size, but I'm still searching how to get it programmatically and cross-platform (not via tune2fs etc.)
– Tomasz Gandor
Apr 22 '16 at 20:56
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what is the unsigned datatype?
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unsigned really is a shorthand for unsigned int, and so defined in standard C.
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How to get base url with jquery or javascript?
...nswer by @Artjom B. For example, when a site is tested over local network (and domain is substituted with IP + local path) the base url could be something like 192.168.0.23/~sites/site/html/ instead of site.dev. Getting the full pathname with Javascript is not an option too, because a site can have ...
Python: try statement in a single line
... in Python, like you would in some other dynamic languages. The safer way (and the prevailing style) is to set all variables to something. If they might not get set, set them to None first (or 0 or '' or something if it is more applicable.)
If you do assign all the names you are interested in fir...